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Dev.to
Dev.to
5/13/2026
Why Your Form Auto-Reply Email Did Not Arrive

Why Your Form Auto-Reply Email Did Not Arrive

Short summary

Form auto-reply failures typically result from configuration, delivery, or inbox-placement issues rather than simple on/off switches. Systematically debug across eight states: configuration, recipient field mapping, send-rule matching, job creation, provider acceptance, delivery status, mailbox placement, and respondent action. Use email authentication (SPF/DKIM/DMARC), trace provider logs, guide recipients to check spam folders, and set Reply-To headers correctly.

  • Debug auto-replies across 8 states: config, recipient mapping, send rule, job creation, provider acceptance, delivery, mailbox, and inbox action
  • Email authentication (SPF/DKIM/DMARC) and provider logs are essential for diagnosing delivery failures
  • Set clear Reply-To headers, guide users to check spam folders, and align copy with actual email behavior

Generated with AI, which can make mistakes.

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